lost in the sauce

[78' chevy cheyenne]

I just got back from afghanistan and bought myself a 78 chevy cheyenne short bed, that will actually be a stepside in about two weeks. My problem is that I am trying to do this hole gen1 gen3 350 mix match thing and am gettin all kinds of turned around. Alot of people say different things so I really need somebody to just break it done dummy style for me.... I pulled some 350 heads off a 98 suburban that i wanna use but i need to know what all I need to do to make this work....I plan on boring the block out 030 over and need to know what rods and cam i need to get and also what intake would be best for it..... would perfer not to break 1200 bucks on this so if anybody has any ideas about how to accomplish this or another way for me to get around 325-350 horse for under 1200 bucks please write it in child mode so i can comprehend what your saying. thanks so much for any input you might have I appreciate it alot.